Sc. Suri et al., SYNTHESIS AND STRUCTURE ELUCIDATION OF XY-ENDO-TRICYCLO[5.2.1.0(2,6)]DECA-3,8-DIEN-5-ONES AND XY-ENDO-TRICYCLO[5.2.1.0(2,6)]DECA-3,8-DIEN-5-ONES, Synthetic communications, 27(5), 1997, pp. 841-851
A mixture of 1-methyl- and tetrahydro-endo-1,4-methano-naphthalene-5,8
-diones (2 & 3) was chemically transformed into separable methyl subst
ituted tricyclo[5.2.1.0(2,6)]decadienones 7, 8 & 9. The structure of 8
& 9 were elucidated via Cope rearrangement of their corresponding all
ylic alcohols (10 & 11) to furnish 12 & 13 respectively.